CN205700087U - A kind of utilize gas generator that cement decomposing furnace is carried out the device of denitration - Google Patents
A kind of utilize gas generator that cement decomposing furnace is carried out the device of denitration Download PDFInfo
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- CN205700087U CN205700087U CN201620308096.2U CN201620308096U CN205700087U CN 205700087 U CN205700087 U CN 205700087U CN 201620308096 U CN201620308096 U CN 201620308096U CN 205700087 U CN205700087 U CN 205700087U
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- 239000004568 cement Substances 0.000 title claims abstract description 37
- 239000003245 coal Substances 0.000 claims abstract description 16
- 239000002994 raw material Substances 0.000 claims abstract description 16
- CDBYLPFSWZWCQE-UHFFFAOYSA-L Sodium Carbonate Chemical compound [Na+].[Na+].[O-]C([O-])=O CDBYLPFSWZWCQE-UHFFFAOYSA-L 0.000 claims abstract description 14
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 10
- 239000002893 slag Substances 0.000 claims abstract description 9
- 239000002699 waste material Substances 0.000 claims abstract description 8
- 239000007789 gas Substances 0.000 abstract description 63
- MWUXSHHQAYIFBG-UHFFFAOYSA-N nitrogen oxide Inorganic materials O=[N] MWUXSHHQAYIFBG-UHFFFAOYSA-N 0.000 abstract description 42
- 238000004134 energy conservation Methods 0.000 abstract 1
- QGZKDVFQNNGYKY-UHFFFAOYSA-N Ammonia Chemical compound N QGZKDVFQNNGYKY-UHFFFAOYSA-N 0.000 description 16
- 238000002309 gasification Methods 0.000 description 14
- 238000002485 combustion reaction Methods 0.000 description 9
- 239000010815 organic waste Substances 0.000 description 9
- UGFAIRIUMAVXCW-UHFFFAOYSA-N Carbon monoxide Chemical compound [O+]#[C-] UGFAIRIUMAVXCW-UHFFFAOYSA-N 0.000 description 8
- 229910021529 ammonia Inorganic materials 0.000 description 8
- 239000003034 coal gas Substances 0.000 description 8
- 239000003546 flue gas Substances 0.000 description 7
- 238000000034 method Methods 0.000 description 7
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 description 6
- 238000005516 engineering process Methods 0.000 description 6
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 5
- 239000000446 fuel Substances 0.000 description 5
- 229910052757 nitrogen Inorganic materials 0.000 description 5
- 239000001301 oxygen Substances 0.000 description 5
- 229910052760 oxygen Inorganic materials 0.000 description 5
- 239000003795 chemical substances by application Substances 0.000 description 4
- 239000002817 coal dust Substances 0.000 description 4
- 229910052739 hydrogen Inorganic materials 0.000 description 4
- 239000000463 material Substances 0.000 description 4
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 description 4
- GQPLMRYTRLFLPF-UHFFFAOYSA-N Nitrous Oxide Chemical class [O-][N+]#N GQPLMRYTRLFLPF-UHFFFAOYSA-N 0.000 description 3
- 239000010813 municipal solid waste Substances 0.000 description 3
- 239000004449 solid propellant Substances 0.000 description 3
- UFHFLCQGNIYNRP-UHFFFAOYSA-N Hydrogen Chemical compound [H][H] UFHFLCQGNIYNRP-UHFFFAOYSA-N 0.000 description 2
- 239000010791 domestic waste Substances 0.000 description 2
- 238000005265 energy consumption Methods 0.000 description 2
- 239000001257 hydrogen Substances 0.000 description 2
- 125000001997 phenyl group Chemical group [H]C1=C([H])C([H])=C(*)C([H])=C1[H] 0.000 description 2
- 239000000126 substance Substances 0.000 description 2
- VHUUQVKOLVNVRT-UHFFFAOYSA-N Ammonium hydroxide Chemical compound [NH4+].[OH-] VHUUQVKOLVNVRT-UHFFFAOYSA-N 0.000 description 1
- 239000004215 Carbon black (E152) Substances 0.000 description 1
- MYMOFIZGZYHOMD-UHFFFAOYSA-N Dioxygen Chemical compound O=O MYMOFIZGZYHOMD-UHFFFAOYSA-N 0.000 description 1
- OAICVXFJPJFONN-UHFFFAOYSA-N Phosphorus Chemical compound [P] OAICVXFJPJFONN-UHFFFAOYSA-N 0.000 description 1
- 235000011114 ammonium hydroxide Nutrition 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 229910002091 carbon monoxide Inorganic materials 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 239000003638 chemical reducing agent Substances 0.000 description 1
- 239000000571 coke Substances 0.000 description 1
- 238000005336 cracking Methods 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000001035 drying Methods 0.000 description 1
- 239000003344 environmental pollutant Substances 0.000 description 1
- 239000002737 fuel gas Substances 0.000 description 1
- 239000003517 fume Substances 0.000 description 1
- 231100000086 high toxicity Toxicity 0.000 description 1
- 229930195733 hydrocarbon Natural products 0.000 description 1
- 150000002430 hydrocarbons Chemical class 0.000 description 1
- 230000008676 import Effects 0.000 description 1
- 239000004615 ingredient Substances 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 230000003647 oxidation Effects 0.000 description 1
- 238000007254 oxidation reaction Methods 0.000 description 1
- 239000013618 particulate matter Substances 0.000 description 1
- 229910052698 phosphorus Inorganic materials 0.000 description 1
- 239000011574 phosphorus Substances 0.000 description 1
- 231100000719 pollutant Toxicity 0.000 description 1
- 239000000843 powder Substances 0.000 description 1
- 230000001737 promoting effect Effects 0.000 description 1
- 238000006479 redox reaction Methods 0.000 description 1
- 239000007921 spray Substances 0.000 description 1
- 238000003860 storage Methods 0.000 description 1
- 238000005728 strengthening Methods 0.000 description 1
- 231100000331 toxic Toxicity 0.000 description 1
- 230000002588 toxic effect Effects 0.000 description 1
- 238000009827 uniform distribution Methods 0.000 description 1
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- Curing Cements, Concrete, And Artificial Stone (AREA)
- Treating Waste Gases (AREA)
Abstract
The utility model discloses and a kind of utilize gas generator that cement decomposing furnace is carried out the device of denitration, it is made up of gas genderating device (1) and cement decomposing furnace device (2), including gas generator (3), gas stove (11), slag bath (12), feed(raw material)inlet (13), gas access (14), backwater entrance (15), gas exit (16), soda pop outlet (17), waste residue outlet (18), blower fan (4), drum (5), water inlet (19), soda pop entrance (20), backwater outlet (21), steam (vapor) outlet (22), dore furnace (6), upper mixing chamber (23), middle mixing chamber (24), combustor (25), two coal burners (7), tertiary-air pipe (8), divide airduct (9), gas entry (10).The content of cement kiln nitrogen oxides can be substantially reduced, can waste residue utilization and energy-conservation.
Description
Technical field
This utility model relates to denitration field of Environment Protection, particularly relates to a kind of utilize gas generator that cement decomposing furnace is carried out the device of denitration.
Background technology
GB4915-2013 " cement industry atmosphere pollutants emission standards " has been issued in country in 2013 third time revision, and the discharge of particulate matter, NOx etc. in flue gas is made strict regulations.Require that existing enterprise and newly-built enterprise discharged nitrous oxides are less than 400mg/Nm3, key area discharged nitrous oxides is less than 320mg/Nm3.Beijing area is then further increased to 200mg/Nm3.Compared with advanced country's standard in the world, such as the 300mg/Nm of the U.S.3, the 500mg/Nm of Germany3, the new standard of Cement Environment Protection of China has been not less than the standard of advanced industrialized country, it is achieved that with integrating with in advanced industrialized country standard.China's cement kiln denitration at present mainly uses the postpositive disposal pattern consuming a large amount of ammonia, and this significantly adds the potential risk in company's input and operating cost, and ammonia storage and transport process.A large amount of energy consumptions in ammonia production process and pollution simultaneously, causes again the covert transfer discharge increased and pollute of clinker energy consumption, and institute there is much controversy the most always.And this method of disposal, inevitably have partial ammonia water and fail to burn completely and discharge, cause the ammonia pollution of environment.China does not the most cause each side to pay attention to for ammonia pollution now, and the fume emission of present stage kiln does not the most propose limit standard to emission intensity.On the one hand therefore we should improve the denitration efficiency of ammonia by every means, energetically, is on the other hand also required to provide for a rainy day, is that denitrification reducing agent carries out technological reserve for eliminating ammonia.
It is substantially not present operating cost with dore furnace air stage feeding and the coal-fired fractional combustion low-NO_x combustion technology as outstanding feature, only initial investment, is a kind of method controlling nitrogen oxides of less expensive, is the most increasingly subject to people's attention.Strengthening the research of the low nitrogen burning of kiln, reduce the ammonia consumption level of denitration operation, this is significant for the energy-saving and emission-reduction of the whole society of China.
Low-NO_x combustion technology mainly passes through fuel-staged combustion or air stage feeding to reduce the discharge of nitrogen oxides.Fuel-staged combustion is mainly divided into two parts (or more parts) fuel, spray into the diverse location of dore furnace, to improve coal dust mean residence time in dore furnace, a part of fuel enters in the flue gas that dore furnace oxygen content is relatively low, reducing atmosphere is formed under suitable flue-gas temperature, the nitrogen oxides being previously generated is reduced, and unburnt material is mixed in the tertiary air air-flow on top with air-flow and completes burning.The usual way of dore furnace air stage feeding is to be drawn a point of airduct to dore furnace afterbody by tertiary-air pipe, make a part of tertiary air hence in stove for fuel after-flame provide oxygen, and stokehold portion is week reduction due to tertiary air deficiency atmosphere, promoting the reduction of nitrogen oxides, both of which is to reach to suppress the generation of nitrogen oxides or to promote that nitrogen oxides changes to nitrogen by the final atmosphere of coal powder ignition region and combustion zone that changes.After using low-NO_x combustion technology, the nitrogen oxides in cement kiln flue gas can be made to be reduced to 500mg/m3, but the qualified discharge of nitrogen oxides in flue gas can't be fully achieved.
Solid fuel gasification process is a thermochemical process.Solid fuel as raw material, using oxygen (air, oxygen-enriched or pure oxygen), steam or hydrogen etc. as gasifying agent, is changed into the process of gaseous fuel with solid fuel (coal or coke etc.) by under the high temperature conditions by chemical reaction.The fuel gas that gasification obtains is referred to as gasification gas, and its effective ingredient includes carbon monoxide, hydrogen and methane etc..
Gasification technology is most commonly seen with coal gasification, and coal gasification process is carried out in gas generator.In gasification furnace, raw material layer substantially can be divided into slag layer, oxide layer, reducing zone, dry distilling layer and drying layer, and its know-why is as the thermal source of steam gasification using liberated heat during oxidation of coal, realizes the gasification of steam with this.Gasified raw material coals etc. are typically loaded burner hearth by top feeding device, raw material layer and slag layer are supported by bottom grate, gasifying agent steam air etc. is entered by bottom air outlet, through grate uniform distribution, contact with raw material layer and generating gasification is reacted, the gasification gas produced is drawn by above raw material layer, and the slag of remaining is discharged by bottom ash-pan.
Organic waste (domestic waste, organic industry rubbish, mud etc.) discharge in recent years is more and more, and ecological environment in serious threat, and the disposal of organic waste should with resource, minimizing, harmless turn to principle.Carry out organic waste in recent years burning or be gasificated as a kind of some effective disposing rubbish, but burn or gasification can produce a certain amount of high toxicity two English, just because of the existence of two English, greatly hinder and limit organic waste burning or gasification technology.
Utility model content
The purpose of this utility model is that providing a kind of utilizes gas generator that cement decomposing furnace is carried out the device of denitration, it is achieved the technical solution of the utility model is:
Described a kind of utilize gas generator that cement decomposing furnace is carried out the device of denitration, mainly include gas genderating device 1 and cement decomposing furnace device 2, wherein:
Described a kind of utilizing gas generator that cement decomposing furnace is carried out the device of denitration, its gas genderating device 1 includes: gas generator 3 (gas stove 11, slag bath 12, feed(raw material)inlet 13, gas access 14, backwater entrance 15, gas exit 16, soda pop outlet 17, waste residue outlet 18), blower fan 4, drum 5 (water inlet 19, soda pop entrance 20, backwater outlet 21, steam (vapor) outlet 22).
Described a kind of utilizing gas generator that cement decomposing furnace is carried out the device of denitration, its cement decomposing furnace device 2 includes: cement decomposing furnace device 2 includes: dore furnace 6 (in the middle part of dore furnace top 23, dore furnace 24 and dore furnace bottom 25), coal burner 7, tertiary-air pipe 8, point airduct 9, gas entry 10.
Described a kind of utilize gas generator that cement decomposing furnace is carried out the device of denitration, the connected mode of its gas genderating device 1 is: blower fan 4 is connected with gas access 14 with steam (vapor) outlet 22, soda pop outlet 17 is connected with soda pop entrance 20, backwater entrance 15 is connected with backwater outlet 21, and gas exit 16 is connected with gas entry 10.
Described a kind of utilize gas generator that cement decomposing furnace is carried out the device of denitration, the connected mode of its cement decomposing furnace device 2 is: two coal burner 7 symmetries are connected to combustor 25, tertiary-air pipe 8 entrance connects combustor 25, mixing chamber 24 in dividing airduct 9 to connect, gas entry 10 is positioned at bottom combustor 25.
The beneficial effects of the utility model are:
1. the reducibility gas that gas genderating device 1 produces is passed through the gas entry 10 of cement decomposing furnace device 2 through gas exit 16, under conditions of excess air coefficient is controlled, will result in the territory of a range of reducing atmosphere.In this reducing atmosphere territory, will reduce to by the nitrogen oxides in flue gas, and suppress the formation of new nitrogen oxides.The fractional combustion of this measure and dore furnace self combines and can be substantially reduced the content of cement kiln nitrogen oxides.
2. gas generator can burn part organic waste simultaneously, produce a small amount of two English enter dore furnaces can in dore furnace and final stage preheater the long period under 850 DEG C of hot conditionss stop, cracking can not be recombined the low molecular Hydrocarbon of two English by phenyl ring etc., until CO2, H2O and N2 etc., thus completely eliminate incinerating organic waste material and produce the possibility of two English.Achieve the resource of organic waste, minimizing, innoxious use.The waste residue that gas generator produces simultaneously can making cement mixing material or cement raw material.
3. the methane, the calorific value of gas such as H2 that produce due to gas generator are high, can reduce the usage amount of coal dust in dore furnace in right amount, will not cause the increase of total power consumption owing to gas generator employs coal after being passed through dore furnace.
Accompanying drawing explanation
Accompanying drawing is structure of the present utility model and connection diagram.
It is embodied as measure
Illustrate a kind of device detailed description of the invention utilizing gas generator that cement decomposing furnace carries out denitration of the present utility model below in conjunction with the accompanying drawings, but be not limited only in embodiment cited content.
This utility model is a kind of utilizes gas generator that cement decomposing furnace flue gas is carried out the device of denitration, mainly includes gas generator 3 (gas stove 11, slag bath 12, feed(raw material)inlet 13, gas access 14, backwater entrance 15, gas exit 16, soda pop outlet 17, waste residue outlet 18), blower fan 4, drum 5 (water inlet 19, soda pop entrance 20, backwater outlet 21, steam (vapor) outlet 22).Cement decomposing furnace device 2 includes: dore furnace 6 (upper mixing chamber 23, middle mixing chamber 24 and combustor 25), coal burner 7, tertiary-air pipe 8, point airduct 9, gas entry 10.
This utility model utilizes gas generator that cement decomposing furnace is carried out denitration can be by below scheme:
Water is added drum 5 in order to be continuously replenished the water in drum 5 by water inlet 19, drum 5 domestic demand preheating water to be heated by backwater outlet 21 entrance backwater entrances 15, preheating water in gas stove 11, be heated to form steam and hot water after after 17 be discharged into soda pop entrance 20 by soda pop outlet.Under the left and right of blower fan 4, the steam discharged by steam (vapor) outlet 22 in air and drum 5 is sent into gas access 14, subsequently into gas stove 11, air and steam as gasifying agent.Gasified raw material is poured into by the feed(raw material)inlet, top 13 of gasification burner 3, and gasified raw material includes coal, domestic waste, organic industry rubbish, mud etc..Being derived by gas exit 16 through a series of redox reaction, the coal gas being finally gasificated into gasifying agent in gas stove 11, coal gas includes CO, H2And CXHXDeng.The part organic waste that gas generator burns, trace two English produced is in 850 DEG C of high temperature above environment of dore furnace, the time of staying can be more than 5s, so that the basic Organic substance phenyl ring of two English produced during burning waste is the most thoroughly cracked into N, H etc., thus under slightly lower temperature conditions, N, H etc. do not possess the condition recombining two English.The residue that gasified raw material produces, enters slag bath 12, by waste residue outlet 18 discharge, depending on its chemism and remaining phosphorus content and chlorinty etc., can use by making cement mixing material, or as cement raw material.
Tertiary air provides the whole oxygen needed for device burning, general air excess device is 1.05, in this utility model cement decomposing furnace device 2, it is delivered to combustor 25 by 70%～the 80% of burning required air by tertiary-air pipe 8, the coal dust sprayed into from coal burner 7 is imperfect combustion in the anaerobic condition of combustor 25, inhibit the generation of fuel type and prompt NO, generate the reducibility gas such as a certain amount of CO, import, from gas entry 10, the coal gas that gas genderating device 1 produces simultaneously, the upper zone making dore furnace 25 forms strong reducing atmosphere, strongly reduce the nitrogen oxides generated；The tertiary air of remaining 20%-30% delivers to the upper area 24 of dore furnace by point airduct 9, form zoneofoxidation, make the reducing substances of major part coal dust and gaseous state after nitrogen oxides is realized strong reduction, realize burning completely in the region of 24 and 23, stop reducibility gas CO to exceed standard, reduce the heat loss due to unburned gas of device.The two contour toxic exhaust gases of English in coal gas also can decompose under the hot environment of dore furnace completely.
Embodiment
Certain cement plant former cement decomposing furnace average 10t/h of coal, divides 1t coal to enter gas generator, remaining 9 tons of entrance dore furnace the most per hour.Organic waste 0.2t is added the most per hour to gas generator.Gas generator uses unistage type gas generator, per hour consumed cabin air 2700m3, consume steam 470m3, generate coal gas 3700m per hour3.After coal gas ll enters dore furnace, low nitrogen burning own with dore furnace combines, and nitrous oxides concentration reduces 20%.Harmful components two English etc. in coal gas is decomposed in dore furnace simultaneously, and the slag that coal gas dore furnace produces is used as cement mixture and is obtained by.
Claims (1)
1. one kind utilizes gas generator that cement decomposing furnace is carried out the device of denitration, it is characterized in that: this device is made up of gas genderating device (1) and cement decomposing furnace device (2), described gas genderating device (1) includes gas generator (3), gas stove (11), slag bath (12), feed(raw material)inlet (13), gas access (14), backwater entrance (15), gas exit (16), soda pop outlet (17), waste residue outlet (18), blower fan (4), drum (5), water inlet (19), soda pop entrance (20), backwater outlet (21), steam (vapor) outlet (22)；Described cement decomposing furnace device (2) includes dore furnace (6), upper mixing chamber (23), middle mixing chamber (24), combustor (25), two coal burners (7), tertiary-air pipe (8), point airduct (9), gas entries (10)；Wherein blower fan (4) is connected with gas access (14) with steam (vapor) outlet (22), soda pop outlet (17) is connected with soda pop entrance (20), backwater entrance (15) is connected with backwater outlet (21), gas exit (16) is connected with gas entry (10), two coal burner (7) symmetries are connected to combustor (25), tertiary-air pipe (8) entrance connects combustor (25), mixing chamber (24) in dividing airduct (9) to connect, gas entry (10) is positioned at combustor (25) bottom.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620308096.2U CN205700087U (en) | 2016-04-13 | 2016-04-13 | A kind of utilize gas generator that cement decomposing furnace is carried out the device of denitration |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620308096.2U CN205700087U (en) | 2016-04-13 | 2016-04-13 | A kind of utilize gas generator that cement decomposing furnace is carried out the device of denitration |
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| CN205700087U true CN205700087U (en) | 2016-11-23 |
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| CN201620308096.2U Expired - Fee Related CN205700087U (en) | 2016-04-13 | 2016-04-13 | A kind of utilize gas generator that cement decomposing furnace is carried out the device of denitration |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105664690A (en) * | 2016-04-13 | 2016-06-15 | 北京凯盛建材工程有限公司 | System for performing denitration on cement decomposing furnace through coal gas generator |
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2016
- 2016-04-13 CN CN201620308096.2U patent/CN205700087U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105664690A (en) * | 2016-04-13 | 2016-06-15 | 北京凯盛建材工程有限公司 | System for performing denitration on cement decomposing furnace through coal gas generator |
| CN105664690B (en) * | 2016-04-13 | 2018-08-24 | 北京凯盛建材工程有限公司 | A kind of system that denitration being carried out to cement decomposing furnace using gas generator |
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| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20161123 |
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| CF01 | Termination of patent right due to non-payment of annual fee |